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破解密码 - linux服务器root密码破解不成功

linux服务器root密码破解不成功
我简单描述下问题所在,因为之前修改过root密码 但第二天就已密码错误被狠狠的打死在服务器门外,(此处怀疑是被攻击过,或者其他途径破解了root mm) 造成网站无法进行备份,以及重要程序的修改,由此我到了机房想通过开机引导页面来修改root 的密码,当我很兴奋重启无误时,我蛋疼了,因为曾经装过这台linux 服务器的网管或者!@#¥%在内核上了 group密码,当时只是蛋疼,于是我想通过光盘进入救援模式来修改root密码,当我花费半天时间才刻好盘的时候,提示报错,无法挂载源系统目录,因此判定,曾经装服务器的时候没有进行过分区,全都是默认安装,蛋碎了,于是又想到另外一个方法,用一台另外的服务器电脑,去修改数据盘的配置文件,但是考虑到如果服务器硬盘做过 riad 和lvm 逻辑卷的话,此项的操作将有可能损坏硬盘数据,放弃了这个想法。现在想问问各位大牛,大婶,大叔,有木有更好的方法或者想杀了我的创意,你们都多多指教,我聆听便是,求大家帮帮忙。

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我简单描述下问题:
因为之前修改过root密码,但第二天就已密码错误,如果自己密码没有设置错误,肯定是被攻击了,现在网站无法进行备份,以及重要程序的修改。由此我到了机房想修改root密码,我做了如下操作:

  1. 通过开机引导使用单用户模式来修改root 的密码,没有成功,之前的网管设置了GRUB密码(不是group密码,报错的具体内容是什么)
  2. 于是我想通过光盘进入救援模式来修改root密码,挂载源系统目录,提示报错(错误内容呢?如果操作的 后面的判定是错误的) 
  3. 最后我想用一台另外的服务器电脑,去修改数据盘的配置文件,但是考虑到如果服务器硬盘做过 riad 和lvm 逻辑卷的话,此项的操作将有可能损坏硬盘数据,放弃了这个想法.

PS:我将提问者的问题简化了,做一个参考。括号里面是我给提示者的话。

PHP中文网PHP中文网2786 days ago743

reply all(3)I'll reply

  • 迷茫

    迷茫2017-04-17 11:12:24

    If your Grub is encrypted and you cannot enter the single-user mode, the most direct way is to remove the Grub password. Using LiveCD is the easiest way
    First go here to download one https://fedorahosted.org/liveusb-crea... liveusb-creator
    Follow the prompts, make a live USB, and then boot from this live USB
    Then try to mount /dev/sdaOOXX or something on mnt, find the location of etc, modify grub.conf, and remove the password
    Then enter single user (you know how to enter single user~~grub e 1 b or something)
    Then change the root password and you’re done

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  • PHPz

    PHPz2017-04-17 11:12:24

    Remove the hard drive and export the data.
    Then reinstall the system.

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  • PHP中文网

    PHP中文网2017-04-17 11:12:24

    First of all, let me complain about your description, it is too formatless and has too many modal particles;
    Again, have you confirmed that it is single-user mode and you have added a password? Then you can ask the person in front for the password.
    Again, I think rescue mode should be able to solve your problem;
    The third method you mentioned is to confirm whether several disks have been raided. If it is a single disk, you can definitely use this method.

    Attach a URL for single-user mode and encryption
    http://zhengdl126.iteye.com/blog/4302...

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